It is a good method to utilize the grain size distribution curves and cumulative frequency curves of marine or river sediments to estimate the hydrodynamic conditions, transportation processes and sedimentary environment. However, researchers can only rely on Excel or Grapher to plot the curves one by one at the present day. The manual plotting procedures are complicated, and calculating the truncation points is time-consuming. To solve the aforementioned problems, we have developed a software tool to plot cumulative frequency curves and calculate the values of truncation points automatically. The software has the ability to plot curves of hundreds of samples accurately and rapidly, promoting researchers to analyze transport mechanisms and hydrodynamic environments. And it is convenient to apply the software to compare the processes of transportation and deposition between different samples.

中文翻译：

---

自动绘制频率和累积频率曲线的软件工具，用于沉积物的粒度分析

利用海洋或河流沉积物的粒度分布曲线和累积频率曲线估算水动力条件，运输过程和沉积环境是一种很好的方法。但是，目前研究人员只能依靠Excel或Grapher逐一绘制曲线。手动绘制过程很复杂，并且计算截断点很耗时。为了解决上述问题，我们开发了一种软件工具来绘制累积频率曲线并自动计算截断点的值。该软件能够准确，快速地绘制数百个样品的曲线，从而促进研究人员分析运输机制和流体动力环境。